[Bug libstdc++/80826] Compilation Time for many of std::map insertions

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80826

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
FWIW using -O1 -g -ftime-report on the original code with GCC 5.4.1 gives:

 TOTAL       :1387.17        5.14       1462.36        2427702 kB

And also prints the -fvar-tracking-assignments note.